Artículos de revista DPIR - LIPS Aldizkari artikuluak: Envíos recientes
Mostrando ítems 41-60 de 65
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Mathematical models to describe the volumetric shrinkage rate of red beans during drying
The present study aimed to determine the volumetric shrinkage rate of bean (Phaseolus vulgaris L.) seeds during air-drying under different conditions of air, temperature and relative humidity, and to adjust several ... -
Runoff, nutrients, sediment and salt yields in an irrigated watershed in southern Navarre (Spain)
The environmental impact of irrigated agriculture on water quality was assessed in Landazuria watershed (Navarre, northeast Spain), a 479.5 ha watershed with 53% of irrigated agricultural land. In the framework of a long-term ... -
Ayer y hoy de la estela discoidea en Navarra
El presente trabajo analiza y cataloga las estelas discoideales en Navarra. -
Hallazgo de treintaiséis nuevas estelas de Navarra
El presente estudio describe el hallazgo de 31 nuevas estelas de Navarra. -
Tipología, tipometría y técnicas escultóricas utilizadas en las estelas de Navarra
Este trabajo pretende diferenciar formalmente una serie de modelos de estelas discoideas, en base a la estructura del disco, del pie, del canto y de las relaciones entre ellos. -
Automatic detection of uprooted orchards based on orthophoto texture analysis
Permanent crops, such as olive groves, vineyards and fruit trees, are important in European agriculture because of their spatial and economic relevance. Agricultural geographical databases (AGDBs) are commonly used by ... -
Residual stresses with time-independent cyclic plasticity in finite element analysis of welded joints
Due to the intense concentration of heat in a reduced area when Gas Metal Arc Welding (GMAW) is used to join mechanical components, the regions near the weld bead are subjected to severe thermal cycles. Firstly, the region ... -
The added value of stratified topographic correction of multispectral images
Satellite images in mountainous areas are strongly affected by topography. Different studies demonstrated that the results of semi-empirical topographic correction algorithms improved when a stratification of land covers ... -
Effects of spatial sampling interval on roughness parameters and microwave backscatter over agricultural soil surfaces
The spatial sampling interval, as related to the ability to digitize a soil profile with a certain number of features per unit length, depends on the profiling technique itself. From a variety of profiling techniques, ... -
Validation of a simplified model to generate multispectral synthetic images
A new procedure to assess the quality of topographic correction (TOC) algorithms applied to remote sensing imagery was previously proposed by the authors. This procedure was based on a model that simulated synthetic scenes, ... -
Combined spatial and temporal effects of environmental controls on long-term monthly NDVI in the Southern Africa savanna
Deconstructing the drivers of large-scale vegetation change is critical to predicting and managing projected climate and land use changes that will affect regional vegetation cover in degraded or threated ecosystems. We ... -
Project management in development cooperation. Non-governmental organizations
Este artículo analiza la adopción de prácticas propias de la gestión de proyectos en las ONG destinadas a la cooperación para el desarrollo, así como su influencia en la ejecución y el impacto de la aplicación de metodologías, ... -
Clasificación de cultivos en la zona media de Navarra mediante imágenes radar polarimétricas
Navarra lleva años empleando la técnica de clasificación supervisada de imágenes multiespectrales de satélite para la realización de la estadística agraria. La cubierta nubosa, muy habitual en esta zona, limita e incluso ... -
Accuracy of methods for field assessment of rill and ephemeral gully erosion
To properly assess soil erosion in agricultural areas, it is necessary to determine precisely the volume of ephemeral gullies and rills in the field by using direct measurement procedures. However, little information is ... -
Evaluation of TOPLATS on three Mediterranean catchments
Physically based hydrological models are complex tools that provide a complete description of the different processes occurring on a catchment. The TOPMODEL-based Land-Atmosphere Transfer Scheme (TOPLATS) simulates water ... -
Evaluation of surface roughness parameters in agricultural soils with different tillage conditions using a laser profile meter
Surface roughness crucially affects the hydrological and erosive behaviours of soils. In agricultural areas surface roughness is directly related to tillage, whose action strongly affects the key physical properties of ... -
Multi-criteria evaluation of topographic correction methods
In the last decades, several topographic correction methods (TOC) have been proposed, but there is not an agreement on the best method. Furthermore, different evaluation criteria have been used in the past, and there is ... -
On the added value of quad-pol data in a multi-temporal crop classification framework based on RADARSAT-2 imagery
Polarimetric SAR images are a rich data source for crop mapping. However, quad-pol sensors have some limitations due to their complexity, increased data rate, and reduced coverage and revisit time. The main objective of ... -
Error in radar-derived soil moisture due to roughness parameterization: an analysis based on synthetical surface profiles
In the past decades, many studies on soil moisture retrieval from SAR demonstrated a poor correlation between the top layer soil moisture content and observed backscatter coefficients, which mainly has been attributed ... -
Effective roughness modelling as a tool for soil moisture retrieval from C-and L-band SAR
Soil moisture retrieval from Synthetic Aperture Radar (SAR) using state-of-the-art backscatter models is not fully operational at present, mainly due to difficulties involved in the parameterisation of soil surface ...